Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type
0 }7 t* P; c5 \' u% L% E4 wNOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9
" ^2 M8 Q8 q' u/ ?4 Z9 J7 R+ Author Affiliations9 ^! `0 ~; U& t. C, g
% y1 G' `. h$ N0 g0 Z7 Z: u1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan % f& O- N! B/ p5 {$ T
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 1 A, A; b! q" G) M8 i8 W+ E
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan
6 J0 B4 _6 m* [4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan
) D+ }2 I9 ~& E5 L9 k5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
* S/ N) s$ {0 `" P& ]6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan
" f# T" Z" g2 `/ N: T7Kinki University School of Medicine, Osaka 589-8511, Japan
! J- r8 l0 v" C* N$ a, P& ^: C8Izumi Municipal Hospital, Osaka 594-0071, Japan
( | ~$ Y a) g, e6 P* K+ R. D9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan - t/ \5 ]0 I# m4 O
Correspondence to: Nobuyuki Yamamoto, Division of Thoracic Oncology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan. Tel: +81 559895222, Fax: +81 559895783, e-mail: n.yamamoto@scchr.jp 0 H6 ]/ p! w1 b
AbstractBackground: The antimetabolic agent S-1 inhibits thymidylate synthase similar to pemetrexed, but through a different mechanism of action. Whether the antitumour activity of S-1 depends on histological type remains unclear. We analysed pooled data from 2 phase II clinical studies of cisplatin and S-1 in patients with previously untreated advanced non-small cell lung cancer. Patients and Methods: We comprised 110 patients with stage IIIB or IV non–small cell lung cancer. Univariate and multivariate analyses were performed to determine the effects of histological type on progression-free survival and response rates. Results: On pooled analysis of the data, according to histological type, median progression-free survival was 3.8 months in patients with squamous cell carcinoma and 4.4 months in those with non-squamous cell carcinoma. Both analyses showed that progression-free survival and response rate did not differ significantly. Conclusion: Unlike molecular targeted agents and pemetrexed, a combination of cisplatin and S-1 may be no difference in response according to histological type. ! M+ m$ v2 a N% `) c# Z" \
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